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Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture
المؤلفون المشاركون
Xu, Nuwen
Dai, Feng
Sha, Chun
Lei, Yingcheng
Li, Biao
المصدر
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-07-27
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
To study the generation mechanism and failure mode of cracks in mass concrete, microseismic monitoring is conducted on the fracture processes of the three-point bending roller compacted concrete (RCC) beam of Guanyinyan hydropower station.
The spectrum characteristics of microseismic signals in different deformation and failure stages of the concrete beam are analyzed, and the identification method of the fracture stages and crack propagation precursors of concrete beam is established.
Meanwhile, the Realistic Failure Process Analysis code (RFPA) is adopted to simulate and analyze the entire failure processes of concrete beam from its cracks initiation, development, propagation, and coalescence, until macroscopic fractures formation subjected to three-point bending test.
The relation curve of the load, loaded displacement, and acoustic emission (AE) of concrete beam in the three-point bending test is also obtained.
It is found that the failure characteristics of concrete beam obtained from numerical experiments agree well with the field physical test results.
The heterogeneity of concrete is the major cause of zigzag propagation paths of beam cracks subjected to three-point bending tests.
The results lay foundation for further exploring the formation mechanism of dam concrete cracks of Guanyinyan hydropower station.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Xu, Nuwen& Dai, Feng& Sha, Chun& Lei, Yingcheng& Li, Biao. 2015. Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture. Journal of Sensors،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1070244
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Xu, Nuwen…[et al.]. Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture. Journal of Sensors No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1070244
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Xu, Nuwen& Dai, Feng& Sha, Chun& Lei, Yingcheng& Li, Biao. Microseismic Signal Characterization and Numerical Simulation of Concrete Beam Subjected to Three-Point Bending Fracture. Journal of Sensors. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1070244
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1070244
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